Review on FTVOGUE 40-60 PSI 110V-230V Water Pump Pressure Control Switch - Adjustable Dual Spring Pole for Optimal Performance by Jim Booth

Verified the on and off settings for this switch. Not even close did I have to adjust the on and off points with my air compressor source. Setup took about 5 minutes. It would have been really annoying if this hadn't been done before installing it in the fountain. The set point was set to ON = 40 psi and OFF = 60 psi. Much easier to set up on desktop than in the well. This is the standard method I use to calibrate all my replacement pressure sensors - for years.